1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725e91d36dfe3960cf522cec046564178e44aa807d948689a31934ecfa7c23f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5ab83f8-2eb9-4364-b55b-1a3f36ee1d1b.json and https://artists.proofprofile.net/proofs/artist/b5ab83f8-2eb9-4364-b55b-1a3f36ee1d1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fadc4c167dce222dfc692072e3d779c68dd0987a9404705e8b96b5d817963c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62203083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62befb19dd2f931b3c21c7fede84c95a49f0814ed63d23d40cfd4020573bf36c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62203084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21db697015196b376976dd18f5e4b8da847d4395c5ddcc56f14040f2ccafffb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ81608063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beeaa2a269c5a8512bb153eec514928bf5b3540762365431e09f819f16abcdc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62410615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc409eee6cd4cc6ad02a40648ead5280da51d353fc2b38c6ac6435ccee2a2ecb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62347326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f68fb16210a3a5570e71d692f54e8d20d19a15005ec7305233777c4b2617069. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62410617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c56ee6aa577fac5fc1dc7cecc92146378d7276f2b85f13ff9c8cc99c7527564. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62410618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb634afc8a47fb0e7e46d0a9b0fe90bcb515451e20fbc0951cd2545abd87187. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62410623.
Kuschelrap Vol. 2: Das Kapitalistische Manifest
Tier Tape 2 - die Leiden des jungen Löwen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbab8b065e3a8a6b749475b9c1099b919b809363800c099383975b622efbf78. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ82083325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504080d8593955e7e24958feda37f308bf4cccff80b27791a7ae10b4e3f664dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ81967941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf327f493598abf9f0c7bd554ba1b9b47d4a1b62d10049361fe0f9deaef1781a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ81967947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38566f5c877715a3f84fa75a64acb99b096ca481e92e286ef2b796a962b0dfe3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62445742.
Just a reminder Thank you Beyoncé out now
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6de75a34938ed2f3802c7c874a876c0bcf7c286036bf3551d776ee606c0efa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62437043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19789244a1f21973ba265f4245cd5619f2b40600bacbe9476145bc38b26a9e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62403604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668817a068315c28f3984f2d7d6362aeffb238d44ff43f2c3cc69d7a2e21b907. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62382949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c6bfb6b840dd6ce4e06b8065bc297b35d4777c0ac883ff4aa2b4deac63d290. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ81757291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf362fa9c69f7a0b7a26a637f5bf949384e62591970c8c154d074c93a9802e3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62342267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be2d4da0081df72d3a1f208e8332c85078be34615673c08f1ca065f897771d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ81757295.